<template>
  <div>
    <!-- 面包屑导航区 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据列表</el-breadcrumb-item>
        </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
        <!-- 2.为 ECharts 准备一个定义了宽高的 DOM -->
    <div id="main" style="width: 100%;height:500px;"></div>
    </el-card>
  </div>
</template>

<script>
// 1.导入echarts
import *as echarts from 'echarts'
import _ from 'lodash'

export default {
  name: '',
  data () {
    return {
        // 需要合并的图表数据
        options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    };
  },
  created() {

  },
  methods: {
    
  },
   async mounted() {
    // 3.基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'));
    
    const {data:res} = await this.$http.get('reports/type/1')
        if(res.meta.status !== 200) return this.$message.error('获取统计图数据失败')

    // 4.准备数据和配置项
    const result = _.merge(res.data,this.options)

     // 5.使用刚指定的配置项和数据显示图表。
      myChart.setOption(result);
    },
}

</script>
<style lang='less' scoped>
</style>